Nordron: Effects on Menstrual Cycle and Conception Risks - Obstetrics and Gynecology

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Naproxen for menstrual regulation and contraception?


Hello doctor, I have been experiencing continuous bleeding for the past two weeks.
After visiting the obstetrics and gynecology department, the doctor determined that I have an abnormal menstrual cycle and prescribed Nordron to delay my period, advising me to take it for seven days.
I would like to know if the likelihood of conception is high if I engage in sexual intercourse during this seven-day period.
Thank you.

V, 20~29 year old female. Ask Date: 2023/08/30

Dr. Chen Zhiyu reply Obstetrics and Gynecology


Hello, regardless of whether menstrual irregularities are caused by the use of hormonal medications or external stress, if there has been intimate contact without proper contraception and menstruation does not occur as expected, it is advisable to take a pregnancy test.
Thank you for your inquiry, and I wish you health and happiness.

Reply Date: 2023/08/30

More Info


Nordron, known generically as norethisterone, is a synthetic progestogen often prescribed to manage menstrual disorders, including irregular cycles and heavy bleeding. It works by mimicking the effects of natural progesterone in the body, which plays a crucial role in regulating the menstrual cycle and maintaining pregnancy.

When taking Nordron to delay menstruation, it is important to understand its effects on the menstrual cycle and the implications for conception. During the seven days of taking Nordron, the medication can effectively suppress ovulation and stabilize the endometrial lining, which may reduce the likelihood of conception. However, it is essential to note that while Nordron can delay menstruation, it does not provide contraception. If you engage in sexual intercourse during this period, there is still a possibility of becoming pregnant, especially if ovulation occurs.

The timing of ovulation is critical in determining the likelihood of conception. If you have irregular cycles, predicting ovulation can be challenging. Nordron may prevent ovulation while you are taking it, but once you stop taking the medication, your body may resume its natural hormonal fluctuations, potentially leading to ovulation shortly thereafter. Therefore, if you have unprotected sex during the week you are taking Nordron, and if ovulation occurs shortly after stopping the medication, there is a risk of conception.

In terms of side effects, Nordron can cause various reactions, including nausea, headaches, breast tenderness, and mood changes. Some women may also experience breakthrough bleeding or spotting while taking the medication. It is crucial to monitor your body’s response to the medication and report any concerning symptoms to your healthcare provider.

If you are considering becoming pregnant or are concerned about the risks of conception while taking Nordron, it is advisable to discuss this with your healthcare provider. They can provide personalized advice based on your medical history and current health status. Additionally, if you experience ongoing abnormal bleeding or other menstrual irregularities, further evaluation may be necessary to rule out underlying conditions.

In summary, while Nordron can help manage menstrual irregularities, it does not serve as a contraceptive. Engaging in sexual activity during the week of taking Nordron may carry a risk of pregnancy, depending on your individual cycle and ovulation patterns. Always consult with your healthcare provider for tailored advice and to ensure that you are making informed decisions regarding your reproductive health.

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